Motion estimation with weighting prediction
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United States of America Patent
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May 20, 2008
Grant Date -
Jan 15, 2004
app pub date -
Apr 9, 2003
filing date -
Jul 15, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A video encoder and decoder are provided for encoding and decoding video signal data for an image block and a particular reference picture index to predict the image block, where the encoder includes a reference picture weighting factor selector having an output indicative of a weighting factor corresponding to the particular reference picture index, a multiplier in signal communication with the reference picture weighting factor selector for providing a weighted version of the reference picture, and a motion estimator in signal communication with the multiplier for providing motion vectors corresponding to the weighted version of the reference picture; and the corresponding decoder a reference picture weighting factor unit having an output for determining a weighting factor corresponding to the particular reference picture index.
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